Construction [Denny Substation]

The Denny Substation will be located in South Lake Union at Denny Way near Stewart Street. Construction began in late May 2016, and the substation will be in service (energized) in mid-2018, with limited construction continuing into late 2018. Follow along on the
interactive construction map.

In late March 2016, the Denny Substation contractor (Walsh Construction) began preparing for substation construction. As part of this preparation, Pontius Avenue N between Denny Way and John Street was permanently closed, along with two city-owned parking lots adjacent to the substation site.